Allergy-preventive effects of the flowers of Impatiens textori

Biol Pharm Bull. 2010;33(4):714-6. doi: 10.1248/bpb.33.714.

Abstract

The allergy-preventive activity of a 35% EtOH extract (IT) of flowers of Impatiens textori MIQ. was demonstrated in a continuing search for allergy-preventive substances from natural sources. The evaluation of its activity used an in vivo assay method for monitoring the blood flow decrease in the tail vein microcirculation of mice subjected to sensitization with hen-egg white lysozyme. Among the principal compounds in IT, apigenin (1), luteolin (3), and luteolin 7-glucoside (4) showed significant allergy-preventive effects.

MeSH terms

  • Animals
  • Anti-Allergic Agents / pharmacology
  • Anti-Allergic Agents / therapeutic use*
  • Apigenin / pharmacology
  • Chickens
  • Egg White
  • Flavones / pharmacology
  • Flowers
  • Glucosides / pharmacology*
  • Hemorheology / drug effects
  • Hypersensitivity, Delayed / chemically induced
  • Hypersensitivity, Delayed / physiopathology
  • Hypersensitivity, Delayed / prevention & control*
  • Impatiens / chemistry*
  • Luteolin / pharmacology
  • Mice
  • Muramidase
  • Phytotherapy
  • Plant Extracts / pharmacology
  • Plant Extracts / therapeutic use*
  • Tail / blood supply

Substances

  • Anti-Allergic Agents
  • Flavones
  • Glucosides
  • Plant Extracts
  • Apigenin
  • Muramidase
  • Luteolin